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while Node /= null loop
if Node.all in EL_Node_Type'Class then
E := EL_Node_Type'Class (Node.all)'Access;
if E.Value.Get_Expression = Pattern (First .. Pos) then
Parent := Node;
Node := Node.Children;
Found := True;
exit;
end if;
end if;
Node := Node.Next_Route;
end loop;
if not Found then
E := new EL_Node_Type;
E.Value := EL.Expressions.Create_Expression (Pattern (First .. Pos), ELContext);
Insert (Parent, E.all'Access, MAYBE_MATCH);
Parent := E.all'Access;
end if;
Function Definition: procedure Set_Permission_Manager (Filter : in out Auth_Filter;
Function Body: Manager : in Policies.Policy_Manager_Access) is
begin
Filter.Manager := Manager;
end Set_Permission_Manager;
-- ------------------------------
-- Filter the request to make sure the user is authenticated.
-- Invokes the <b>Do_Login</b> procedure if there is no user.
-- If a permission manager is defined, check that the user has the permission
-- to view the page. Invokes the <b>Do_Deny</b> procedure if the permission
-- is denied.
-- ------------------------------
overriding
procedure Do_Filter (F : in Auth_Filter;
Request : in out Servlet.Requests.Request'Class;
Response : in out Servlet.Responses.Response'Class;
Chain : in out Servlet.Core.Filter_Chain) is
use Ada.Strings.Unbounded;
use Policies.URLs;
use type Policies.Policy_Manager_Access;
Session : Servlet.Sessions.Session;
SID : Unbounded_String;
AID : Unbounded_String;
Auth : Servlet.Principals.Principal_Access;
pragma Unreferenced (SID);
procedure Fetch_Cookie (Cookie : in Servlet.Cookies.Cookie);
-- ------------------------------
-- Collect the AID and SID cookies.
-- ------------------------------
procedure Fetch_Cookie (Cookie : in Servlet.Cookies.Cookie) is
Name : constant String := Servlet.Cookies.Get_Name (Cookie);
begin
if Name = SID_COOKIE then
SID := To_Unbounded_String (Servlet.Cookies.Get_Value (Cookie));
elsif Name = AID_COOKIE then
AID := To_Unbounded_String (Servlet.Cookies.Get_Value (Cookie));
end if;
end Fetch_Cookie;
Context : aliased Contexts.Security_Context;
begin
Request.Iterate_Cookies (Fetch_Cookie'Access);
-- Get a session but avoid creating it.
Session := Request.Get_Session (Create => False);
if Session.Is_Valid then
Auth := Session.Get_Principal;
end if;
-- If the session does not have a principal, try to authenticate the user with
-- the auto-login cookie.
if Auth = null and then Length (AID) > 0 then
Auth_Filter'Class (F).Authenticate (Request, Response, Session, To_String (AID), Auth);
if Auth /= null then
-- Now we must make sure we have a valid session and create it if necessary.
if not Session.Is_Valid then
Session := Request.Get_Session (Create => True);
end if;
Session.Set_Principal (Auth);
end if;
end if;
-- A permission manager is installed, check that the user can display the page.
if F.Manager /= null then
if Auth = null then
Context.Set_Context (F.Manager, null);
else
Context.Set_Context (F.Manager, Auth.all'Access);
end if;
declare
Servlet : constant String := Request.Get_Servlet_Path;
URL : constant String := Servlet & Request.Get_Path_Info;
Perm : constant Policies.URLs.URL_Permission (URL'Length)
:= URL_Permission '(Len => URL'Length, URL => URL);